Help with filling and finishing spalted walnut

The rocking chair seat has some spalting. It’s the grey/white part in the picture. I put a lot of minwax wood hardener in it which helped firm up the area. However, the surface is not flat because when I hit it with a sander it really gouged the punky area. I hand planed it down a bit but there are some 1/8” wide and 1/16” deep grooves that can’t be seen in the pictures. I’m not sure if I should leave them alone, put some tinted epoxy in the grooves, or ???.

Also, there’s dis-coloration and bumpiness in the rounded portion of seat where, i assume, the plastic from the hardener was burnished from sanding. It’s kind of taken on a mottled finsih. Not sure what to do with it either

What would you do?

-- Sorry the reply is so long. I didn't have time to write a short reply.

I can get good results with a hand plane to flatten the surface but I didn’t want to remove anymore wood because it could make the back leg joint look funny or have a pronounced dish in the area that is scraped.

I appreciate the reply.

-- Sorry the reply is so long. I didn't have time to write a short reply.